Method of coiling rods or bars



June 18, 1935.

w. w. HILL 2,005.369

METHOD OF COILING RODS OR BARS V Filed Oqt. 11, 1932 2 Sheets-Sheet 1 lnvenlor: MAL/4M 14 M44,

June 18, 1935, w w, H 2,005,369

METHOD OF COILING RODS OR BARS Filei Oct. 11, 1932 2 Sheets-Sheet 2 Patented June 18, 1935 PATENT ,OFFICE' 2,005,369 I METHOD or comma none on Bans William W. Hill, Duquesne, Pa.., assignor to Carnegie Steel Company, a corporation of New Jersey Application October 11,

2 Claims.

. This invention relates to improvements in a method of coiling rods orbars, and more particularly one which is used in connection with a rolling mill.

Heretofore, in rolling mill practice no little difficulty has attended the coiling of rods or bars, or merchant bar, as itis known to the trade, as it comes from the finishing stands. In the past the usual method has been to coil the bar immediatelya'fter it has come from the finishing rolls or at the end of the hot run-out associated with the rolls. This hot-coiling, as it is called, has a number of disadvantages.

The coils are commonly loose and distorted and bar sections that are not round often have a tendency to twist longitudinally of their length. Also it is not possible to closely inspect a bar for surface defects after it has been coiled, and it is diificult. to square-off the ends of the bars, as often required by the trade. The present invention overcomesall of the above disadvantages.

One object of the present invention is to pro-' vide means for coiling rods or bars, when cold, which cracks off much of the scale adhering to them and in addition forms a more compact and. neater coil.

Another object of the invention is to allow the rods or bars to cool before reeling, in order to prevent longitudinal twisting of the rod or bar stock, which would necessarily reduce itsusefulness.

A further object is to provide means to enable a more thorough inspection of, the rods orbars as they come from the rolling mill and the shearing or squaring-off of their ends. I

The foregoing and other objects of my invention will be made more apparent from the following disclosure.

Referring to the drawings- Figure 1, is a diagrammatic view of my invention as used in connection with a conventional rod mill.

Figure 2 is an enlarged top plan view of the reeling end of Figure 1.

Figure 3 is an end elevation of my improved reel.

Figure 4 is a front side view thereof.

The letter B indicates the usual finishing stand of a rolling mill and has associated therewith a hot run-out 2, which directly communicates with a cooling bed 3. A cold run-out 4 is positioned between the cooling bed 3 and a shear 5, which is' mounted on one end of a shear table 6. It will be understood that the foregoing elements are 1932, Serial No. 637,319

conventional in structure per se, and as such formno part of the present invention.

' A reel 8 is positioned closely adjacent the other end of the shear table 6. A motor l0 and a suitable transmission mechanism ll! is provided for- 5 rotating the reel in the coiling operation. A guide I6, for closely winding and leveling the convolutions of the coil as they are formed,-is positioned on the end of the shear table 6. Guide I6 is oscillated back and forth by means of a motor l1 and 10 a slulitable oscillating means generally indicated at The reel 8 receives its rotary motion from the motor l0 and the suitabletransmissioninechanism III while mounted on a spindle 23 of conventional 5 design. Beneath the reel 8 there is mounted a semi-cylindrical plate II, which has a plurality of separator rings ll aflixed thereto. The rings H, together with plate I2, form pockets in which coils are formed on reel 8, and while three sepa- 20 rator rings for-forming two coils on one reel are disclosed, it is to be understood that this number is entirely optional. The reel 8 isprovided with a slot or grip 9 in which the advance ends of rods or merchant bar are placed. v

The semi-cylindrical plate I2 is mounted on and aflixed to a horizontal supporting plate l2. Ver tical supports l2 serve to rigidly maintain the relationship of the semi-cylindrical plate [2. and the horizontal supporting plate l2.

A threaded block 22 is aflixe'd to the plate l2" and receives horizontal or longitudinal movement from a screw I9, which is driven through a transmission mechanism l5 by a motor 15. The block 22 in its movement will, of course, move the semi- 35 cylindrical plate l2 and its attached separator rings I l which, taken together, form the coil pockets, and strip the coils from the reel 8.

Another coiling reel 8 is positioned in remote relationship with respect to the end of the shear 40 table 6 and behind and offset from the reel 8 and, being an exact duplicate thereof, including its drive means, guide and stripping device, together with their attendant mechanisms, does not warrant separate description, and thesame reference numerals are applied thereto.

In operation, the rods or bars from the finishing stand of the rolling mill are delivered by the hot run-out 2 to the cooling bed 3 associated therewith. After passing broadside across the cooling The. advance ends of the rods or bars, shown in the drawings as being four in number, indicated by the-letter A, are cropped by the shear at this point and fed along the shear table 6. Two of these rods or bars are positioned in the guide l6 and their ends passed into the slot or grip 9 of the reel 8. The two remaining rods or bars on the shear table move on over the shear table extension 2|, pass through the guide associated with remote reel 8 and hence into the slot or grip of reel 8.

- The motors III of the two coiling reels are rotated and the motors H are started to oscillate the guides I 6, which closely wind and level the rods or bars upon the reels.

The separator rings II, which are positioned outside of and between the coils of each reel will, by being ailixed to the semi-cylindrical plate l2, strip'the coils from each of the reels as the blocks 22 and associated parts are moved relative to the reels. At this point the coils may be handled by a loading hook 24 having an elongated step 26, which is attached to a crane.

In the past it has been the practice to position the coiling reels immediately adjacent either the finishing rolls or at the end of the hot run-out associated therewith. In accordance with my invention, however, the hot rod or bar coming from the finishing rolls and run-out is carried over the cooling bed and its associated cold run-out before it is coiled.

In addition to the numerous advantages found to be inherent in coiling the bar when cold,- such as material elimination of the scale adhering to the bar, prevention of longitudinal twisting and the fact that it will form and maintain a closely compact and neater coil, it can readily be seen that the method of conveyingthe bar full length over thecooling bed and cold run-out will permit of a close inspection.

Another advantage of this method is that the cooling bed will act as a temporary storage, so that minor delays at the coiling mechanism will not affect operation of the rolling mill.

While I have shown and described one specific embodiment of my invention it will be understood that I do not wish to be limited thereto, since various modifications may be made without departing from the scope of my invention, as defined in the following claims.

I claim:

1. The method of manufacturing commercial rods and bars which consists in finishing the rods or bars in a roll stand, cooling said rods or bars on a cooling bed, cropping the advance ends of said rods or bars, conveying them over a shear table, reeling the cooled rods or bars into coils and cropping the trailing ends of said rods or bars.

2. The method of manufacturing commercial rods or bars which consists in hot finishing the same in aroll stand, cooling said rods or bars while in extended lengths on a cooling bed, crop ping the advance ends of the same and conveying them over a shear table, reeling said cooled rods or bars into coils and cropping their trail ing ends.

WILLIAM W. HILL. 

